package 力扣91;

/**
 @ClassName : TreeNode
 @Author : 骆发茂
 @Date: 2021/12/20 9:57
 @Description :
 */
 public class TreeNode {
     int val;
     TreeNode left;
     TreeNode right;
     TreeNode() {}
     TreeNode(int val) { this.val = val; }
     TreeNode(int val, TreeNode left, TreeNode right) {
         this.val = val;
         this.left = left;
         this.right = right;
     }
 }